can someone help me re launch my quicktime & itunes pls....I think i accidently closed a process in the task manager....any suggestions?

and also my internet is running slower than usual...but my other pcs internet is running fine....

Restart your computer and try it again. You may have closed one of the processes that iTunes needs to open.

Which one? What error message are you getting? Does iTunes run?

Right click on my computer --> services and applications --> services. The current version of iTunes has 3 services: Apple Mobile Device, Bonjour Service, & iPod Service. Each should be set as "automatic" under the startup type column if any aren't you need to double click on it and change it to automatic.
Now if any are off [ie not "started"] you need to start them either by right click on the service and choosing start or by double clicking the start button.

Personally I leave them off until I need them to sync or backup my ipod. They aren't required to just play music.